There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{sqrt({L}^{2} - {x}^{2})u}{L}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{usqrt(L^{2} - x^{2})}{L}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{usqrt(L^{2} - x^{2})}{L}\right)}{dx}\\=&\frac{u(0 - 2x)*\frac{1}{2}}{L(L^{2} - x^{2})^{\frac{1}{2}}}\\=& - \frac{ux}{(L^{2} - x^{2})^{\frac{1}{2}}L}\\ \end{split}\end{equation} \]

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